WHITEBOX ADVISORS LLC
SEC Form 13F institutional filer · CIK 0001257391
13F-HR · 12 reported holdings · 2026-03-31
Reported long-US-equity value
$0.16B
Top-10 concentration
99.7%
WHITEBOX ADVISORS LLC — $163M AUM allocation strategy
WHITEBOX ADVISORS LLC files SEC Form 13F and reports $163M of long US equity value across 12 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 38.0%, followed by Communication Services 33.9% and Consumer Discretionary 24.7%.
The top 10 holdings account for 100% of reported value — a conviction-weighted book concentrated in its best ideas. The sector and industry splits below are of the same reported value. Track quarter-over-quarter adds, trims, new positions and exits below — sourced from SEC 13F filings, public domain.
WHITEBOX ADVISORS LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$163M
total across 12 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
100% of value
higher = narrower conviction; lower = spread / hedging
Biggest trims (shares)
−$FOXA −343K sh · −$24.4M−$NWS −179K sh · −$4.76M−$MGM −99.2K sh · −$3.52M
Exited to nil (held last quarter, gone now)
$ZTS ($9.34M last qtr)$PSKY ($577K last qtr)$PNW ($530K last qtr)$SW ($207K last qtr)
Sector allocation (share of reported value)
each slice is a share of the reported long-US-equity value — smaller sectors and the rest of the book roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Industry allocation (share of reported value)
- Broadcasting32.8%—
- Application Software24.8%—
- Hotels, Resorts & Cruise Lines20.5%—
- Communications Equipment13.2%—
- Casinos & Gaming4.2%—
- Asset Management & Custody Banks2.3%—
- Publishing1.0%—
- Transaction & Payment Processing Services0.6%—
- Other holdings0.6%—
the finer GICS cut of the same book — same denominator — smaller industries roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Top S&P 500 holdings
10 of 10 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $WBD | Warner Bros. Discovery Inc. Series A | 1.62M | $44.3M | +1.22M | 27.2% |
| $ORCL | Oracle Corporation | 900K | $40.5M | — | 24.8% |
| $CCL | Carnival Corporation Ltd | 1.3M | $33.5M | — | 20.5% |
| $LITE | Lumentum Holdings Inc | 30.8K | $21.6M | — | 13.2% |
| $FOXA | Fox Corporation | 175K | $9.31M | -343K | 5.7% |
| $MGM | MGM Resorts International | 187K | $6.92M | -99.2K | 4.2% |
| $BLK | BlackRock Inc | 90.5K | $2.25M | — | 1.4% |
| $NWS | News Corporation | 68.5K | $1.71M | -179K | 1.0% |
| $BEN | Franklin Templeton Inc | 205K | $1.57M | +0 | 1.0% |
| $FISV | Fiserv Inc | 18.7K | $1.04M | +3.4K | 0.6% |
…and 2 more holdings in the full 13F filing (top positions only shown).
SEC Form 13F data sets · public domain · 45-day filing lag · >$100M AUM managers · as reported
← All 13F filers·← QuantOrb.pro
How to read Δ QoQ — the five insight categories, and the caveats
The categories. Analysts, quants and retail traders look past total portfolio value to isolate actionable signals. Five categories matter.
Conviction & concentration shifts
New positions vs complete exits — a brand-new stock signals high conviction; a full liquidation suggests a broken thesis or tax-loss harvesting. Aggressive sizing — look at share count, not dollars: a 20% share increase during a drawdown is strong dip-buying. Concentration — a narrowing top-5/10 means conviction; spreading capital across more names means hedging.
Sector & macro allocation rotations
Aggregating Δ QoQ moves across sectors shows where smart money is leaning in or sneaking out — rotating out of growth into defensives or energy, for example. The fund's total long equity exposure quarter-over-quarter is a proxy for overall institutional risk appetite.
Crowding & smart-money consensus
When several managers initiate or expand the same stock in the same quarter, that is institutional consensus. Contrarian reads: top pickers buying hard into a beaten-down name the market is selling.
Derivative & option overlays
Reported call/put changes indicate whether managers are adding downside hedges or leveraging upside exposure. Note: a long increase may be half of a market-neutral pair trade.
Who reads this
| Retail "cloners" | High-conviction ideas to replicate ~45 days after quarter-end. |
| Corporate IR | Which funds bought or dumped the stock, before the next call. |
| Quant / algo traders | Cross-sectional factor inputs: flow, momentum, ownership. |
Four caveats before you trade on it
- 45-day lag — holdings are quarter-end; positions may already be closed.
- Long-only — 13Fs miss shorts, pair trades and cash.
- No non-US / fixed income — the picture is US equities plus options.
- Corporate actions — splits and spinoffs distort raw share deltas.
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